Journal
NANO LETTERS
Volume 12, Issue 4, Pages 1923-1927Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl204378r
Keywords
Gold nanoparticle; optical sorting; optical manipulation; counter-propagating geometry; evanescent field; plasmon resonance
Categories
Funding
- U.K. Engineering and Physical Sciences Research Council
- EPSRC [EP/I004602/1]
- EPSRC [EP/I004602/1, EP/G029733/1, EP/F020589/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I004602/1, EP/G029733/1, EP/F020589/1] Funding Source: researchfish
Ask authors/readers for more resources
We present a generic technique allowing size-based all-optical sorting of gold nanoparticles. Optical forces acting on metallic nanoparticles are substantially enhanced when they are illuminated at a wavelength near the plasmon resonance, as determined by the particle's geometry. Exploiting these resonances, we realize sorting in a system of two counter-propagating evanescent waves, each at different wavelengths that selectively guide nanoparticles of different sizes in opposite directions. We validate this concept by demonstrating bidirectional sorting of gold nanoparticles of either 150 or 130 nm in diameter from those of 100 nm in diameter within a mixture.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available